真空计量的量子化研究进展

doi:10.13385/j.cnki.vacuum.2023.06.02

Abstract

Abstract: The Quantum Pascal project under the european metrology programme for innovation and research(EMPIR) aims to develop a photon-based vacuum measurement standard for converting the international unit of pressure(Pa) into a unit of gas density. The project focuses on various optical methods, including the refractive index method, absorption spectroscopy, and the cold atom method, to establish quantum vacuum standards. These methods offer high precision and repeatability, and each has its unique features. The refractive index method and absorption spectroscopy rely on the interaction mechanism of gas molecules in vacuum, while the cold atom method uses the properties of Bose-Einstein condensed matter. In this paper, these principles and application devices are introduced in detail, providing a valuable reference for the development of quantum vacuum metrology technology. The advancement of these technologies will enable more accurate vacuum measurements and more precise scientific research, which is crucial for various fields, such as semiconductor manufacturing, materials science, and quantum information.

Key words: vacuum metrology, quantum vacuum, refractive index method, cold atom, absorption spectroscopy

CLC Number: TB771

ZHENG Yi-ming, WANG Xu-di, WU Jun. Research Progress in Quantization of Vacuum Metrology[J].VACUUM, 2023, 60(6): 9-14.

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Research Progress in Quantization of Vacuum Metrology

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